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P1640 Ford Code - Powertrain DTCs Available in Another Module

Quick Answer

The P1640 diagnostic trouble code (DTC) for Ford vehicles indicates that there are Powertrain DTCs available in another module. Common causes include Faulty communication between modules, Defective powertrain control module (PCM), Wiring or connection issues. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P1640 Ford indicates Powertrain DTCs Available in Another Module.
Common causes
Common causes include Faulty communication between modules, Defective powertrain control module (PCM), Wiring or connection issues.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 08, 2024
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Code P1640 Ford Description

The P1640 diagnostic trouble code (DTC) for Ford vehicles indicates that there are Powertrain DTCs available in another module. In simpler terms, this means that there are fault codes related to the vehicle's powertrain system that are stored in a different module or control unit than where the current diagnostic scan is being performed. This could be due to a communication issue between modules or a fault in one of the modules that prevents the codes from being properly retrieved.

OBDII Code P1640 Ford - Powertrain DTCs Available in Another Module
P1640 Ford Code - Powertrain DTCs Available in Another Module

Common Causes of P1640 Ford

  1. Faulty communication between modules
  2. Defective powertrain control module (PCM)
  3. Wiring or connection issues
  4. Software glitches or programming errors
  5. Faulty sensors or components within the powertrain system

Symptoms of P1640 Ford

  1. Check Engine Light (MIL) illuminated
  2. Reduced fuel efficiency
  3. Rough idling or engine misfires
  4. Transmission shifting issues
  5. Engine stalling or hesitation during acceleration

How to Fix P1640 Ford

  1. Perform a comprehensive diagnostic scan using a professional scan tool to retrieve all stored fault codes.
  2. Check for any communication issues between modules and repair or replace any faulty wiring or connections.
  3. Update software or reprogram modules if necessary to ensure proper communication and code retrieval.
  4. Inspect and test sensors and components within the powertrain system to identify and address any faulty parts.
  5. Clear all stored DTCs and perform a road test to verify that the issue has been resolved.

Cost to Fix P1640 Ford

The typical repair costs for addressing the P1640 code can vary depending on the specific cause of the issue. In general, the cost of diagnosing and repairing this problem can range from $100 to $500, including parts and labor. However, it's important to note that the actual cost may be higher if extensive repairs or module replacements are required. Additionally, labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate based on your vehicle make and model.

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Information for Specific Ford Models

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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